I could choose you could choose he could choose we could choose you could choose they could choose
Forma com V-ing
I could be choosing you could be choosing he could be choosing we could be choosing you could be choosing they could be choosing
Perfeito
I could have chosen you could have chosen he could have chosen we could have chosen you could have chosen they could have chosen
Perfeito com V-ing
I could have been choosing you could have been choosing he could have been choosing we could have been choosing you could have been choosing they could have been choosing
Negação
Forma simple
I could not choose you could not choose he could not choose we could not choose you could not choose they could not choose
Forma com V-ing
I could not be choosing you could not be choosing he could not be choosing we could not be choosing you could not be choosing they could not be choosing
Perfeito
I could not have chosen you could not have chosen he could not have chosen we could not have chosen you could not have chosen they could not have chosen
Perfeito com V-ing
I could not have been choosing you could not have been choosing he could not have been choosing we could not have been choosing you could not have been choosing they could not have been choosing
Forma interrogativa
Forma simple
could I choose? could you choose? could he choose? could we choose? could you choose? could they choose?
Forma com V-ing
could I be choosing? could you be choosing? could he be choosing? could we be choosing? could you be choosing? could they be choosing?
Perfeito
could I have chosen? could you have chosen? could he have chosen? could we have chosen? could you have chosen? could they have chosen?
Perfeito com V-ing
could I have been choosing? could you have been choosing? could he have been choosing? could we have been choosing? could you have been choosing? could they have been choosing?
Forma interro-Negação
Forma simple
could I not choose? could you not choose? could he not choose? could we not choose? could you not choose? could they not choose?
Forma com V-ing
could I not be choosing? could you not be choosing? could he not be choosing? could we not be choosing? could you not be choosing? could they not be choosing?
Perfeito
could I not have chosen? could you not have chosen? could he not have chosen? could we not have chosen? could you not have chosen? could they not have chosen?
Perfeito com V-ing
could I not have been choosing? could you not have been choosing? could he not have been choosing? could we not have been choosing? could you not have been choosing? could they not have been choosing?